We've PM'ed a little about bluegrass & perennial rye. Now you're considering a blend of ttt fescues, or straight KY 31 fescue. I will in no way bash the durability aspects of fescue in S Ohio. But at the same time, we're talking about seeding in February, and the relatively s-l-o-w germination tendencies of fescue compared to other species, ESPECIALLY rye. And who knows exactly when the day care providers at each specific facility will be letting the little rut rats loose to run around & start the slow but inevitable process of destroying your work? We could have 2 week's worth of decent weather at the end of February & the beginning of March- maybe more than enough foot traffic to do it in just at the time it's trying to come up! Early season traffic is the primary reason why I believe you should stick w/ your original plan of bluegrass & rye. An 80%/20% (by weight) rye/blue blend is actually close to 65/35 by seed count because an individual bluegrass seed is much smaller than rye, so use something very close to 80/20 by weight. If you seed heavily enough (8-10# / 1000 sq ft) there should be plenty of bluegrass there to begin throwing out rhizomes, & hopefully the rye will withstand the stampede of kids long enough for this to happen. I'm pretty sure the Lesco name for either 80/20 or 75/25 is 'Eagle Blend plus Blue'. CWS, the Feed Barn, or Shemins Nursery (on Muhlhauser s of 275) can probably find you equivalents if Lesco people are too inept to help you.